1222223211 has 48 divisors (see below), whose sum is σ = 2044044288. Its totient is φ = 695520000.

The previous prime is 1222223209. The next prime is 1222223221. The reversal of 1222223211 is 1123222221.

1222223211 is a `hidden beast` number, since 122 + 222 + 321 + 1 = 666.

It is not a de Polignac number, because 1222223211 - 2¹ = 1222223209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222223201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1263450 + ... + 1264416.

It is an arithmetic number, because the mean of its divisors is an integer number (42584256).

Almost surely, 2^1222223211 is an apocalyptic number.

1222223211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222223211 is a deficient number, since it is larger than the sum of its proper divisors (821821077).

1222223211 is a wasteful number, since it uses less digits than its factorization.

1222223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1749 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1222223211 is about 34960.3090804415. The cubic root of 1222223211 is about 1069.1783983202.

Adding to 1222223211 its reverse (1123222221), we get a palindrome (2345445432).

The spelling of 1222223211 in words is "one billion, two hundred twenty-two million, two hundred twenty-three thousand, two hundred eleven".